cvsroot/libgender/shader.C

#include <cassert>

#include "shader.h"
#include "shader_vars.h"

#include <sstream>
#include <iomanip>

namespace shader {

  using namespace std;

  refcounted::~refcounted ()
  {
    if (refcnt)
      abort ();
  }

  void refcounted::refcnt_dec () const
  {
    if (!--refcnt)
      delete this; // quite a bit of code...
  }

  const char str_float  [] = "float";
  const char str_vec2   [] = "vec2";
  const char str_vec3   [] = "vec3";
  const char str_vec4   [] = "vec4";
  const char str_mat2   [] = "mat2";
  const char str_mat3   [] = "mat3";
  const char str_mat4   [] = "mat4";

  const char str_sampler_1d             [] = "sampler1D";
  const char str_sampler_1d_shadow      [] = "sampler1DShadow";
  const char str_sampler_2d             [] = "sampler2D";
  const char str_sampler_2d_shadow      [] = "sampler2DShadow";
  const char str_sampler_2d_rect        [] = "sampler2DRect";
  const char str_sampler_2d_rect_shadow [] = "sampler2DRectShadow";
  const char str_sampler_3d             [] = "sampler3D";
  const char str_sampler_3d_rect        [] = "sampler3DRect";
  const char str_sampler_cube           [] = "samplerCube";

  unsigned int var_i::next_id = 0;

  var_i::var_i (const char *typestr)
  : typestr (typestr)
  {
  }

  var_i::~var_i ()
  {
  }

  stream_i::stream_i (const char *strtype)
  : var_i (strtype)
  {
    sprintf (name, "V%d", ++next_id);
  }

  temporary_i::temporary_i (const char *strtype)
  : var_i (strtype)
  {
    sprintf (name, "T%d", ++next_id);
  }

  uniform_i::uniform_i (const char *strtype)
  : var_i (strtype)
  {
    sprintf (name, "U%d", ++next_id);
  }

  fragment_string_i::~fragment_string_i ()
  {
    free (str);
  }

  ////////////////////////////////////////////////////////////////////////////

  void var_i::build_decl (ostringstream &b)
  {
    b << typestr << ' ' << name;
  }

  void uniform_i::build_decl (ostringstream &b)
  {
    b << "uniform " << typestr << ' ' << name;
  }

  void stream_i::build_decl (ostringstream &b)
  {
    b << typestr << ' ' << name;
  }

  ////////////////////////////////////////////////////////////////////////////

  void gluvar_i::build (shader_builder &b)
  {
    b << name;
  }

  void var_i::build (shader_builder &b)
  {
    b << name;
  }

  void uniform_i::build (shader_builder &b)
  {
    var_i::build (b);

    if (find (b.refs.begin (), b.refs.end (), uniform (*this)) == b.refs.end ())
      b.refs.push_back (*this);
  }

  void stream_i::build (shader_builder &b)
  {
    var_i::build (b);

    if (find (b.streams.begin (), b.streams.end (), var (*this)) == b.streams.end ())
      b.streams.push_back (*this);
  }

  void temporary_i::build (shader_builder &b)
  {
    var_i::build (b);

    if (find (b.temps.begin (), b.temps.end (), var (*this)) == b.temps.end ())
      b.temps.push_back (*this);
  }

  void fragment_vector_i::build (shader_builder &b)
  {
    for (vector<fragment>::iterator i = begin (); i != end (); i++)
      (*i)->build (b);
  }

  void fragment_const_string_i::build (shader_builder &b)
  {
    b << str;
  }

  void fragment_string_i::build (shader_builder &b)
  {
    b << str;
  }

#if 0
  void statement_i::build (shader_builder &b)
  {
    b << "  ";
    fragment_vector_i::build (b);
    b << ";\n";
  }
#endif

  ////////////////////////////////////////////////////////////////////////////

  int texture_units::unit_count = 8;
  int texture_units::units[8] = { 7, 6, 5, 4, 3, 2, 1, 0 };

  shader_object_i *cur = 0;

  shader_object_i::shader_object_i (GLenum type)
  : type (type)
  {
    id = glCreateShaderObjectARB (type);
    assert (id);
  }

  shader_object_i::~shader_object_i ()
  {
    glDeleteObjectARB (id);
  }

  void shader_object_i::start ()
  {
    clear ();
    cur = this;
  }

  void shader_object_i::stop ()
  {
    cur = 0;
  }

  string shader_object_i::source ()
  {
    shader_builder b;
    build (b);
    ostringstream os;

    for (vector<uniform>::iterator i = b.refs.begin (); i != b.refs.end (); i++)
      {
        (*i)->build_decl (os);
        os << ";\n";
      }

    // not neccessary right now, as GLSL is rich on predefinitions
    for (vector<var>::iterator i = b.streams.begin (); i != b.streams.end (); i++)
      {
        os << "attribute ";
        (*i)->build_decl (os);
        os << ";\n";
      }

    os << "\nvoid main (void)\n{\n";

    for (vector<var>::iterator i = b.temps.begin (); i != b.temps.end (); i++)
      {
        os << "  ";
        (*i)->build_decl (os);
        os << ";\n";
      }

    os << "\n";
    os << b.source.str ();
    os << "}\n";

    return os.str ();
  }

  static string linify (const string &s)
  {
    ostringstream o;

    int b = 0, e;
    int l = 1;
    do {
      o << setw (3) << l << ": ";
      e = s.find ('\n', b);
      if (e == string::npos)
        e = s.size ();

      o << s.substr (b, e - b + 1);
      b = e + 1;
      l++;
    } while (b < s.size ());

    return o.str ();
  }

  void shader_object_i::compile ()
  {
    string src = source ();
    const char *sptr = src.data ();
    const int slen = src.size ();

    printf ("%s\n", linify (src).c_str ());
    glShaderSourceARB (id, 1, &sptr, &slen);
    glCompileShaderARB (id);

    GLint compiled;
    glGetObjectParameterivARB (id, GL_OBJECT_COMPILE_STATUS_ARB, &compiled);

    if (!compiled)
      {
        char infolog[8192];
        glGetInfoLogARB (id, 8192, NULL, infolog);
        printf ("%s\n", linify (src).c_str ());
        printf ("%s\n", infolog);
        abort ();
      }
  }

  ////////////////////////////////////////////////////////////////////////////
  
  program_object *program_object::cur = 0;

  GLint uniform_i::location ()
  {
    assert (program_object::cur);

    GLint &rid = program_object::cur->uloc[this];

    if (!rid)
      rid = glGetUniformLocationARB (program_object::cur->id, name);

    return rid;
  }

  program_object::program_object ()
  {
    id = glCreateProgramObjectARB ();
    assert (id);

    glAttachObjectARB (id, vsh->id);
    glAttachObjectARB (id, fsh->id);
  }

  program_object::~program_object ()
  {
    glDeleteProgramsARB (1, &id);
  }

  void program_object::link ()
  {
    glLinkProgramARB (id);
        
    GLint linked;
    glGetObjectParameterivARB (id, GL_OBJECT_LINK_STATUS_ARB, &linked);

    if (!linked)
      {
        char infolog[8192];
        glGetInfoLogARB (id, 8192, NULL, infolog);
        printf ("LINK-INFOLOG<%s>\n", infolog);
        abort ();
      }

    uloc.clear ();
  }

  void sl_func0::begin () const
  {
    cur->append_string (name_par);
  }

  void sl_func0::comma () const
  {
    cur->append (str_comma);
  }

  void sl_func0::end () const
  {
    str_rpar ();
  }

  void sl_float::operator ()() const
  {
    char s[20];
    sprintf (s, "%g", c);
    cur->append_string (s);
  }

  const sl_convert< ::vec2 >::T sl_convert< ::vec2 >::convert (const ::vec2 &v)
  {
    sl_string<60> s;
    sprintf (s.str, "vec2 (%g, %g)", v.x, v.y);
    return s;
  }

  const sl_convert< ::vec3 >::T sl_convert< ::vec3 >::convert (const ::vec3 &v)
  {
    sl_string<80> s;
    sprintf (s.str, "vec3 (%g, %g, %g)", v.x, v.y, v.z);
    return s;
  }

  const sl_convert< ::vec4 >::T sl_convert< ::vec4 >::convert (const ::vec4 &v)
  {
    sl_string<100> s;
    sprintf (s.str, "vec4 (%g, %g, %g, %g)", v.x, v.y, v.z, v.w);
    return s;
  }

  const fragment_const_string str_2sp    ("  ");
  const fragment_const_string str_equal  (" = ");
  const fragment_const_string str_comma  (", ");
  const fragment_const_string str_endl   (";\n");

  const sl_append_const_string str_plus  (" + "); 
  const sl_append_const_string str_minus (" - "); 
  const sl_append_const_string str_mul   (" * "); 
  const sl_append_const_string str_div   (" / "); 
  const sl_append_const_string str_mod   (" % "); 

  const sl_append_const_string str_lpar  ("(");
  const sl_append_const_string str_rpar  (")");

  void swizzle_mask (sl_string<7> &s, int mask)
  {
    static const char channel[4] = { 'x', 'y', 'z', 'w' };

    char *str = s.str;

    *str++ = ')';
    *str++ = '.';

    while (mask)
      {
        int c = mask % 5;
        mask /= 5;

        if (c)
          *str++ = channel[c - 1];
      }

    *str++ = 0;
  }


  void debdebdebdebug ()//D
  {
    return;

    vertex_shader vsh;

    vsh->start ();

    temp_4f lightpos;
    temp_4f wpos;

    lightpos = vec4 (0, 10, 0, 1);
    wpos = gl.model_view_matrix * vin.vertex;
    vout.position = vin.vertex * gl.model_view_matrix_inverse;
    vout.tex_coord[0] = vin.tex_coord[0];
    vout.tex_coord[1] = normalize (lightpos - wpos);
    vout.tex_coord[2] = normalize (wpos);
    //vout.tex_coord[3] = normalize (xyz (gl.model_view_matrix_inverse_transpose) * vin.normal);
    //vout.tex_coord[4] = normalize (xyz (gl.projection_matrix_inverse_transpose) - wpos);

    vsh->end ();
    vsh->compile ();

    fragment_shader fsh;

    fsh->start ();

    xyz (fout.frag_color) = noise3 (x (fin.frag_coord) * y (fin.frag_coord));

    temp_1f spec_expon;
    spec_expon = 200;

    fsh->end ();
    fsh->compile ();

    //abort ();
  }

}

Revision:	1.21
Committed:	Fri Oct 29 22:32:49 2004 UTC (21 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.20:	+1 -7 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.12	#include <cassert>
2
3	root	1.1	#include "shader.h"
4			#include "shader_vars.h"
5
6	root	1.17	#include <sstream>
7			#include <iomanip>
8
9	root	1.18	namespace shader {
10	root	1.17
11	root	1.18	using namespace std;
12	root	1.1
13			refcounted::~refcounted ()
14			{
15			if (refcnt)
16			abort ();
17			}
18
19	root	1.6	void refcounted::refcnt_dec () const
20			{
21			if (!--refcnt)
22			delete this; // quite a bit of code...
23			}
24
25	root	1.1	const char str_float [] = "float";
26			const char str_vec2 [] = "vec2";
27			const char str_vec3 [] = "vec3";
28			const char str_vec4 [] = "vec4";
29			const char str_mat2 [] = "mat2";
30			const char str_mat3 [] = "mat3";
31			const char str_mat4 [] = "mat4";
32
33			const char str_sampler_1d [] = "sampler1D";
34			const char str_sampler_1d_shadow [] = "sampler1DShadow";
35			const char str_sampler_2d [] = "sampler2D";
36			const char str_sampler_2d_shadow [] = "sampler2DShadow";
37			const char str_sampler_2d_rect [] = "sampler2DRect";
38			const char str_sampler_2d_rect_shadow [] = "sampler2DRectShadow";
39			const char str_sampler_3d [] = "sampler3D";
40			const char str_sampler_3d_rect [] = "sampler3DRect";
41			const char str_sampler_cube [] = "samplerCube";
42
43			unsigned int var_i::next_id = 0;
44
45			var_i::var_i (const char *typestr)
46			: typestr (typestr)
47			{
48			}
49
50			var_i::~var_i ()
51			{
52			}
53
54	root	1.4	stream_i::stream_i (const char *strtype)
55			: var_i (strtype)
56			{
57	root	1.19	sprintf (name, "V%d", ++next_id);
58	root	1.4	}
59
60	root	1.1	temporary_i::temporary_i (const char *strtype)
61			: var_i (strtype)
62			{
63	root	1.19	sprintf (name, "T%d", ++next_id);
64	root	1.1	}
65
66			uniform_i::uniform_i (const char *strtype)
67	root	1.19	: var_i (strtype)
68	root	1.1	{
69	root	1.19	sprintf (name, "U%d", ++next_id);
70	root	1.1	}
71
72			fragment_string_i::~fragment_string_i ()
73			{
74			free (str);
75			}
76
77			////////////////////////////////////////////////////////////////////////////
78
79			void var_i::build_decl (ostringstream &b)
80			{
81			b << typestr << ' ' << name;
82			}
83
84			void uniform_i::build_decl (ostringstream &b)
85			{
86			b << "uniform " << typestr << ' ' << name;
87			}
88
89			void stream_i::build_decl (ostringstream &b)
90			{
91			b << typestr << ' ' << name;
92			}
93
94			////////////////////////////////////////////////////////////////////////////
95
96	root	1.16	void gluvar_i::build (shader_builder &b)
97	root	1.1	{
98			b << name;
99			}
100
101			void var_i::build (shader_builder &b)
102			{
103			b << name;
104			}
105
106			void uniform_i::build (shader_builder &b)
107			{
108			var_i::build (b);
109
110			if (find (b.refs.begin (), b.refs.end (), uniform (*this)) == b.refs.end ())
111			b.refs.push_back (*this);
112			}
113
114			void stream_i::build (shader_builder &b)
115			{
116			var_i::build (b);
117
118			if (find (b.streams.begin (), b.streams.end (), var (*this)) == b.streams.end ())
119			b.streams.push_back (*this);
120			}
121
122			void temporary_i::build (shader_builder &b)
123			{
124			var_i::build (b);
125
126			if (find (b.temps.begin (), b.temps.end (), var (*this)) == b.temps.end ())
127			b.temps.push_back (*this);
128			}
129
130			void fragment_vector_i::build (shader_builder &b)
131			{
132			for (vector<fragment>::iterator i = begin (); i != end (); i++)
133			(*i)->build (b);
134			}
135
136			void fragment_const_string_i::build (shader_builder &b)
137			{
138			b << str;
139			}
140
141			void fragment_string_i::build (shader_builder &b)
142			{
143			b << str;
144			}
145
146			#if 0
147			void statement_i::build (shader_builder &b)
148			{
149			b << " ";
150			fragment_vector_i::build (b);
151			b << ";\n";
152			}
153			#endif
154
155			////////////////////////////////////////////////////////////////////////////
156
157	root	1.20	int texture_units::unit_count = 8;
158	root	1.21	int texture_units::units[8] = { 7, 6, 5, 4, 3, 2, 1, 0 };
159	root	1.20
160	root	1.1	shader_object_i *cur = 0;
161
162			shader_object_i::shader_object_i (GLenum type)
163			: type (type)
164			{
165			id = glCreateShaderObjectARB (type);
166	root	1.12	assert (id);
167	root	1.1	}
168
169			shader_object_i::~shader_object_i ()
170			{
171			glDeleteObjectARB (id);
172			}
173
174			void shader_object_i::start ()
175			{
176			clear ();
177			cur = this;
178			}
179
180			void shader_object_i::stop ()
181			{
182			cur = 0;
183			}
184
185			string shader_object_i::source ()
186			{
187			shader_builder b;
188			build (b);
189			ostringstream os;
190
191			for (vector<uniform>::iterator i = b.refs.begin (); i != b.refs.end (); i++)
192			{
193			(*i)->build_decl (os);
194			os << ";\n";
195			}
196
197			// not neccessary right now, as GLSL is rich on predefinitions
198			for (vector<var>::iterator i = b.streams.begin (); i != b.streams.end (); i++)
199			{
200			os << "attribute ";
201			(*i)->build_decl (os);
202			os << ";\n";
203			}
204
205			os << "\nvoid main (void)\n{\n";
206
207			for (vector<var>::iterator i = b.temps.begin (); i != b.temps.end (); i++)
208			{
209			os << " ";
210			(*i)->build_decl (os);
211			os << ";\n";
212			}
213
214			os << "\n";
215			os << b.source.str ();
216			os << "}\n";
217
218			return os.str ();
219			}
220
221	root	1.17	static string linify (const string &s)
222			{
223			ostringstream o;
224
225			int b = 0, e;
226			int l = 1;
227			do {
228			o << setw (3) << l << ": ";
229			e = s.find ('\n', b);
230			if (e == string::npos)
231			e = s.size ();
232
233			o << s.substr (b, e - b + 1);
234			b = e + 1;
235			l++;
236			} while (b < s.size ());
237
238			return o.str ();
239			}
240
241	root	1.1	void shader_object_i::compile ()
242			{
243			string src = source ();
244			const char *sptr = src.data ();
245			const int slen = src.size ();
246
247	root	1.17	printf ("%s\n", linify (src).c_str ());
248	root	1.1	glShaderSourceARB (id, 1, &sptr, &slen);
249			glCompileShaderARB (id);
250
251			GLint compiled;
252			glGetObjectParameterivARB (id, GL_OBJECT_COMPILE_STATUS_ARB, &compiled);
253
254			if (!compiled)
255			{
256			char infolog[8192];
257			glGetInfoLogARB (id, 8192, NULL, infolog);
258	root	1.17	printf ("%s\n", linify (src).c_str ());
259			printf ("%s\n", infolog);
260	root	1.12	abort ();
261			}
262			}
263
264	root	1.19	////////////////////////////////////////////////////////////////////////////
265
266			program_object *program_object::cur = 0;
267
268			GLint uniform_i::location ()
269			{
270			assert (program_object::cur);
271
272			GLint &rid = program_object::cur->uloc[this];
273
274			if (!rid)
275			rid = glGetUniformLocationARB (program_object::cur->id, name);
276
277			return rid;
278			}
279
280	root	1.12	program_object::program_object ()
281			{
282			id = glCreateProgramObjectARB ();
283			assert (id);
284	root	1.15
285			glAttachObjectARB (id, vsh->id);
286			glAttachObjectARB (id, fsh->id);
287	root	1.12	}
288
289			program_object::~program_object ()
290			{
291			glDeleteProgramsARB (1, &id);
292			}
293
294			void program_object::link ()
295			{
296			glLinkProgramARB (id);
297
298			GLint linked;
299			glGetObjectParameterivARB (id, GL_OBJECT_LINK_STATUS_ARB, &linked);
300
301			if (!linked)
302			{
303			char infolog[8192];
304			glGetInfoLogARB (id, 8192, NULL, infolog);
305			printf ("LINK-INFOLOG<%s>\n", infolog);
306	root	1.1	abort ();
307			}
308	root	1.19
309			uloc.clear ();
310	root	1.1	}
311
312	root	1.7	void sl_func0::begin () const
313			{
314			cur->append_string (name_par);
315			}
316
317	root	1.8	void sl_func0::comma () const
318			{
319			cur->append (str_comma);
320			}
321
322	root	1.7	void sl_func0::end () const
323			{
324			str_rpar ();
325			}
326
327	root	1.6	void sl_float::operator ()() const
328			{
329			char s[20];
330			sprintf (s, "%g", c);
331			cur->append_string (s);
332			}
333
334	root	1.9	const sl_convert< ::vec2 >::T sl_convert< ::vec2 >::convert (const ::vec2 &v)
335	root	1.6	{
336			sl_string<60> s;
337			sprintf (s.str, "vec2 (%g, %g)", v.x, v.y);
338			return s;
339			}
340
341	root	1.9	const sl_convert< ::vec3 >::T sl_convert< ::vec3 >::convert (const ::vec3 &v)
342	root	1.6	{
343			sl_string<80> s;
344			sprintf (s.str, "vec3 (%g, %g, %g)", v.x, v.y, v.z);
345			return s;
346			}
347
348	root	1.9	const sl_convert< ::vec4 >::T sl_convert< ::vec4 >::convert (const ::vec4 &v)
349	root	1.6	{
350			sl_string<100> s;
351			sprintf (s.str, "vec4 (%g, %g, %g, %g)", v.x, v.y, v.z, v.w);
352			return s;
353			}
354
355	root	1.5	const fragment_const_string str_2sp (" ");
356			const fragment_const_string str_equal (" = ");
357	root	1.8	const fragment_const_string str_comma (", ");
358	root	1.5	const fragment_const_string str_endl (";\n");
359
360	root	1.1	const sl_append_const_string str_plus (" + ");
361			const sl_append_const_string str_minus (" - ");
362			const sl_append_const_string str_mul (" * ");
363			const sl_append_const_string str_div (" / ");
364	root	1.9	const sl_append_const_string str_mod (" % ");
365	root	1.1
366	root	1.5	const sl_append_const_string str_lpar ("(");
367	root	1.1	const sl_append_const_string str_rpar (")");
368
369	root	1.5	void swizzle_mask (sl_string<7> &s, int mask)
370			{
371			static const char channel[4] = { 'x', 'y', 'z', 'w' };
372
373			char *str = s.str;
374
375			*str++ = ')';
376			*str++ = '.';
377
378			while (mask)
379			{
380			int c = mask % 5;
381			mask /= 5;
382
383			if (c)
384			*str++ = channel[c - 1];
385			}
386
387			*str++ = 0;
388			}
389
390	root	1.7
391	root	1.1	void debdebdebdebug ()//D
392			{
393	root	1.20	return;
394
395	root	1.1	vertex_shader vsh;
396
397			vsh->start ();
398
399			temp_4f lightpos;
400	root	1.18	temp_4f wpos;
401	root	1.1
402	root	1.13	lightpos = vec4 (0, 10, 0, 1);
403	root	1.18	wpos = gl.model_view_matrix * vin.vertex;
404	root	1.17	vout.position = vin.vertex * gl.model_view_matrix_inverse;
405	root	1.7	vout.tex_coord[0] = vin.tex_coord[0];
406	root	1.18	vout.tex_coord[1] = normalize (lightpos - wpos);
407			vout.tex_coord[2] = normalize (wpos);
408	root	1.14	//vout.tex_coord[3] = normalize (xyz (gl.model_view_matrix_inverse_transpose) * vin.normal);
409			//vout.tex_coord[4] = normalize (xyz (gl.projection_matrix_inverse_transpose) - wpos);
410	root	1.1
411			vsh->end ();
412	root	1.13	vsh->compile ();
413	root	1.10
414			fragment_shader fsh;
415
416			fsh->start ();
417
418	root	1.11	xyz (fout.frag_color) = noise3 (x (fin.frag_coord) * y (fin.frag_coord));
419
420	root	1.10	temp_1f spec_expon;
421			spec_expon = 200;
422
423			fsh->end ();
424			fsh->compile ();
425
426	root	1.11	//abort ();
427	root	1.1	}
428
429			}
430